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Start ShoppingMikuni FN102221-165 High Speed Jet - Precision Fuel Delivery for Power & Performance
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Description
Elevate your power sports experience with the Mikuni FN102221-165 High Speed Jet, engineered for precision fuel delivery and unmatched performance. This advanced jet system optimizes engine efficiency, ensuring maximum power output while maintaining smooth operation under demanding conditions.
Key Features
- High-Speed Fuel Metering: Delivers precise fuel-air mixture for enhanced throttle response and power delivery.
- Durable Construction: Built with corrosion-resistant materials for long-lasting performance in harsh environments.
- Adjustable Needle: Customizable fuel flow settings to match engine specifications and riding conditions.
- Compatibility: Designed for seamless integration with Mikuni carburetor systems across various power sports equipment.
- Smooth Operation: Reduces engine hesitation and ensures consistent performance during high-speed maneuvers.
Why Choose This Product
Whether you're tackling off-road trails or racing on the track, the Mikuni FN102221-165 High Speed Jet offers the reliability and precision needed to dominate. Its advanced design minimizes fuel waste, improves engine efficiency, and enhances overall riding experience. Perfect for riders who demand peak performance without compromising durability.
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Elevate your power sports experience with the Mikuni FN102221-165 High Speed Jet, engineered for precision fuel delivery and unmatched performance. This advanced jet system optimizes engine efficiency, ensuring maximum power output while maintaining smooth operation under demanding conditions.
Key Features
- High-Speed Fuel Metering: Delivers precise fuel-air mixture for enhanced throttle response and power delivery.
- Durable Construction: Built with corrosion-resistant materials for long-lasting performance in harsh environments.
- Adjustable Needle: Customizable fuel flow settings to match engine specifications and riding conditions.
- Compatibility: Designed for seamless integration with Mikuni carburetor systems across various power sports equipment.
- Smooth Operation: Reduces engine hesitation and ensures consistent performance during high-speed maneuvers.
Why Choose This Product
Whether you're tackling off-road trails or racing on the track, the Mikuni FN102221-165 High Speed Jet offers the reliability and precision needed to dominate. Its advanced design minimizes fuel waste, improves engine efficiency, and enhances overall riding experience. Perfect for riders who demand peak performance without compromising durability.
| SKU | GM45D4DB35 |
|---|---|
| MPN | FN102221-165 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Carbureted motorcycles/ATVs (e.g., Honda XR, Yamaha YZ, Kawasaki KX, Suzuki RM) | 1980-2025 |
| Honda | CRF250R, XR400R, XR650R | 1990-2010 |
| Yamaha | XT600, YZ250 | 1985-2005 |
| Kawasaki | KX250, KLX300 | 1995-2015 |
Frequently Asked Questions
Fits most Mikuni VM, PF, BS, and HSR series carburetors used on Japanese bikes/ATVs.
This is a high speed (main) jet for the main circuit.
Often paired with needle/pilot changes for full tuning; start with main jet for high RPM adjustment.
Depends on mods/elevation; stock often 150-170, larger for big bore/exhaust.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet wrench or needle nose pliers
Pro Tips
- Remove carb, unscrew old jet counterclockwise, note float height after. Clean with carb cleaner. Test in stages for proper jetting.
Common Mistakes to Avoid
- Installing wrong size jet
- Not cleaning carb passages before install
Comparison vs Stock/OEM
Direct replacement/upgrade for OEM Keihin or stock Mikuni jets
Improvements
- Precise fuel delivery for high RPM
- Better for altitude/mods vs stock sizing
- High-quality brass construction
Considerations
- Requires tuning to avoid lean/rich conditions
Durability & Warranty
Expected Lifespan
Entire carb life if not damaged; indefinite with proper jetting
Warranty
Limited lifetime from Mikuni against defects
Maintenance
Inspect during carb cleans; replace if corroded or clogged
What Others Are Saying
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